Transient analysis of particle deposition characteristics in a highly loaded turbine cascade with varying blade profiles

IF 9 1区工程技术 Q1 ENERGY & FUELS

Energy Pub Date : 2025-04-15 DOI:10.1016/j.energy.2025.136150

Fei Zeng , Ziyang Yang , Lei Luo , Wei Du , Han Yan , Xun Zhou

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引用次数: 0

Abstract

The particle deposition process on turbine blades has the potential to compromise the service life, aerodynamic efficiency, and cooling performance of the blades. In this paper, for the first-stage high-pressure turbine guide vane of an aeroengine, User-Defined Functions (UDF) and unsteady numerical simulation techniques are used to investigate the deposition characteristics of the cascade surface under different profile parameters. In this study, two variables, leading edge diameter and stagger angle of the cascade, are set to investigate the effect of the variation of both on the surface deposition distribution, the impact efficiency, the sticking efficiency, and the capture efficiency in the turbine cascades. The results show that the 7.5 cm and 9.5 cm leading edge diameter cascades show a decrease in sticking efficiency (by about 2.3 %) and a cut in deposition of 5.0 % compared to the 5.5 cm leading edge diameter cascade. Moreover, compared with the highest sticking efficiency of 29.75° stagger angle cascade, the sticking efficiency of 32.75° stagger angle cascade is reduced by 3.4 %, and the amount of deposition particles is reduced by 7.1 %. The results reflect the significant effect of leading edge diameter and stagger angle on particle deposition behavior.

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不同叶型高负荷涡轮叶栅颗粒沉积特性的瞬态分析

涡轮叶片上的颗粒沉积过程有可能损害叶片的使用寿命、空气动力学效率和冷却性能。本文以某型航空发动机一级高压涡轮导叶为研究对象，采用自定义函数（UDF）和非定常数值模拟技术，研究了不同叶型参数下叶栅表面沉积特性。本研究设置叶栅前缘直径和叶栅错开角两个变量，研究两者的变化对涡轮叶栅表面沉积分布、冲击效率、粘滞效率和捕集效率的影响。结果表明，与前缘直径5.5 cm的叶栅相比，前缘直径7.5 cm和9.5 cm的叶栅粘接效率降低了约2.3%，沉积减少了5.0%。与29.75°交错角叶栅的最高黏附效率相比，32.75°交错角叶栅的黏附效率降低了3.4%，沉积颗粒的数量减少了7.1%。结果表明，前缘直径和错开角对颗粒沉积行为有显著影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Energy 工程技术-能源与燃料

CiteScore

15.30

自引率

14.40%

发文量

审稿时长

14.2 weeks

期刊介绍： Energy is a multidisciplinary, international journal that publishes research and analysis in the field of energy engineering. Our aim is to become a leading peer-reviewed platform and a trusted source of information for energy-related topics. The journal covers a range of areas including mechanical engineering, thermal sciences, and energy analysis. We are particularly interested in research on energy modelling, prediction, integrated energy systems, planning, and management. Additionally, we welcome papers on energy conservation, efficiency, biomass and bioenergy, renewable energy, electricity supply and demand, energy storage, buildings, and economic and policy issues. These topics should align with our broader multidisciplinary focus.